What causes spontaneous abortion?

summary

Natural state (non-human caused) abortion is called spontaneous abortion. In all clinically confirmed pregnancies, the incidence of spontaneous abortion is about 15%. Abortion before 12 weeks is defined as early abortion, and abortion between 12 weeks and less than 28 weeks is defined as late abortion. It is estimated that about 75% of all human pregnancies end in spontaneous abortion. Among them, most of the embryos stopped developing soon after implantation, only manifested as menorrhagia or delayed menstruation, namely early pregnancy abortion. What causes spontaneous abortion? Let's talk about it

What causes spontaneous abortion?

Endocrine dysfunction: egg cells in the role of progesterone, can be implanted in the uterine wall, growth and development into the fetus. When the secretion of progesterone in the body is insufficient, the development of uterine decidua is poor, which affects the development of egg cells and easily leads to abortion. If prostaglandins increase, it will cause frequent contraction of uterine muscles, and also lead to spontaneous abortion. The decrease of thyroid function can lead to the disorder of cell oxidation ability, and then affect the growth and development of embryo, resulting in spontaneous abortion.

Systemic diseases of pregnant women: pregnant women suffer from influenza, typhoid fever, pneumonia, etc. bacterial toxins or enter the body of the fetus through the placenta, causing the fetus to die of poisoning. High fever can promote uterine contraction and cause abortion. Pregnant women with severe anemia, heart failure, chronic nephritis and hypertension, can be due to placental infarction and intrauterine hypoxia and fetal disability, resulting in spontaneous abortion. Maternal malnutrition, especially vitamin deficiency, and mercury, lead, alcohol poisoning can cause spontaneous abortion.

Maternal fetal blood group incompatibility: pregnant women have received blood transfusion in the past, or in the process of pregnancy and blood group incompatibility of the coagulation factor, will make the fetal body of fine cells agglutination and hemolysis, resulting in spontaneous abortion.

matters needing attention

After some pregnant women find threatened abortion, they simply give up fetal protection because they are worried about the influence of drugs on the quality of the fetus. This is actually unscientific. If pregnant women find signs of threatened abortion, they should go to the hospital for examination as soon as possible instead of choosing fetal protection drugs at will.